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Anthony Mallet
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Commit557aaa7ffa("ft232: support the ASYNC_LOW_LATENCY flag") enables unprivileged users to set the FTDI latency timer, but there was a logic flaw that skipped sending the corresponding USB control message to the device. Specifically, the device latency timer would not be updated until next open, something which was later also inadvertently broken by commitc19db4c9e4("USB: ftdi_sio: set device latency timeout at port probe"). A recent commitc6dce26266("USB: serial: ftdi_sio: fix extreme low-latency setting") disabled the low-latency mode by default so we now need this fix to allow unprivileged users to again enable it. Signed-off-by: Anthony Mallet <anthony.mallet@laas.fr> [johan: amend commit message] Fixes:557aaa7ffa("ft232: support the ASYNC_LOW_LATENCY flag") Fixes:c19db4c9e4("USB: ftdi_sio: set device latency timeout at port probe"). Cc: stable <stable@vger.kernel.org> # 2.6.31 Signed-off-by: Johan Hovold <johan@kernel.org>
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.